Headlights of vehicles



April 13 1926.

1,580,276 J. AYER HEADLIGHTS OF VEHICLES Filed Oct. 25, 1923 f/vvmvra/r.

'. uZesA en 7 To all whom it may concern:

Patented Apr. 13, 1926. p

i cairn TATES Joins AYER, or rionioon, ENGLAND;

HIFYIADLIGI-IVTS or, VEHICLES.

, application filed October 25, 1923. Serial No. 670,735."

Be it known that I, JULES AYER, a subject of the King of Great Britain, residing at London, England, have tinvented certain new and useful Improvements in and Relating to the Headlights of Vehicles, which the following is a specification;

The present invention relate sztokheadlights for motor cars. and similar lamps which have a parabolic reflector and an':-1-ncandescent lamp, the reflector being divided so as .to have a stationary forward portion and a movable pivoted rear portion.

This kind of lamp is designed to give the usual beam ahead for ordinary driving, but on the approach of an oncoming vehicle, or for other. purposes, the usual beam is changed to a non-dazzling beam by altering the focus of the source of light in the headlamp.

An object of the present invention is to provide an improved construction of lamp of this kind which possesses manufacturing facilities and in use isvery efficient in exhibiting a non-dazzlingbeam while at the same time giving sufficient soft light to illuminate the road for safe driving and pass ing.

The accompanying drawings illustrate a lamp according to the present invention, Fig. 1 being a sectional elevation, and'Fig. 2 a sectional plan view'thereof.

Referring to the drawings a lamp a is shewn having an adjustable bulb b and a rear reflector part 9 divided such as by way of example by a straight out or division h from itheforwar d part of the paraboloidal reflector i and the bulb Z) and the rear reflector part 9 are mounted to turn together on a horizontal medial axis y' located behind the source of light to put the source of light out of focus with respect to the forward part of the paraboloidal reflector i so asto spread the rays reflected therefrom and dip the beam projected from the rear part of the refiector, thereby modifying a dazzling beam to a non-dazzling beam and realizing at the same time the effect of a dipping headlight without its disadvantages. The rear reflec:

tor part may be actuated about the axis 9 which is remote from the split or division in the reflector by rod, wire, or other appropriate connection such as it related to a control within easy reach of the driver. j

The rear reflector part 9 as shown may have appropriate spring provision for returning this to normal wardly from ple, mouse-trap springs Z, Z may be mounted on the axis 4', each'spring having one end anchored to or restrained by a' fixed part of the lamp such as'one of' the pair of arms m, m made the non-tilting forward part of therefiector i to carry the tiltingaxis and having the other end anchored or restrained *by the wall of the rear reflector Part-g,:i; .1, t o vBy way of examplethe' axiszj is'shewn as formed of opposite cylindrical projections a, n from the lamp socket holder 0 of the rear reflector part g, and corresponding opposite cylindrical bearingsp, p, m, m.

The. non-tilting forward part c is provided with a stop g on its upper side to arrest and definitely position the rear reflector part 9 for normal functioning of the lamp.

The lamp socket holder 0 and the lamp socket r are shewn in Fig. 3 as adapted for screw connection allowing the necessary adjustment for focussing, and the adjustment when made may be approprlately locked such as by the set screw 8.

t is the usual glass fronted hinged door of the lamp, and u the socket mounts. A test carried out for the applicant showed that a lamp constructed substantialducing an even light in front without any blinding or irritating glare. A test was made driving a car with the headlamps out towards acar fitted with the aforesaid lamp but controlled as described to throw a nondazzling beam, and it was particularly noticeable with what great ease the last mentioned car could be passed, as its lamp gave sufficient soft light to show the approaching driver the road.

Such a headlight is particularly serviceable in fog or mist as the dipped beam is of on the arms position, for examfast with and extending rear picking up a curb, hedge,

scribed comprising in combination a divided reflector having a stationary front portion and a movable rear portion, a pivot mount on which said rear portion tilts downwardly, said pivot mount being located at the back of said movable rear portion of the reflector and remote from the forward portion thereof, mechanical means for downwardly tilting the rear portion of the reflector to cast the rays downwards and shield the upper surface of the stationary reflector portion from the source of light, means for returning the movable rear portion of the reflector to normal position, and a stop to ariest and definitely position the rear reflector part for normal functioning of the lamp.

2. A vehicle headlight of the kind described comprising in combination a divided reflector having a stationary front portion and a movable rear portion, a pivot mount on which said rear portion tilts downwardly, said pivot mount being located at the back of said movable rear portion ofthe reflector and remote from the forward portion thereof, a joint guide support for the rear reflector part supported from the forward part of the reflector, mechanical means for downwardly tilting the rear portion of the reflector to cast the rays downwards and shield the upper surface of the stationary reflector portion from the source of light, and means for returning the movable rear portion of the reflector to normal position.

In testimony whereof, I ai'fix my signature.

J ULES AYER. 

